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Cash, Cash Equivalents and Short-Term Investments (Details) - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash and Cash Equivalents [Abstract]      
Cash and cash equivalents $ 6,293,293 $ 2,521,050 $ 3,798,811
Short-term investments 2,480,753  
Total $ 8,774,046 $ 2,521,050